One vertex per element, one color per generator, with an edge from x to x·s.
(2,7)(3,10)(4,5)(8,11)(9,14)(12,13)(17,18,21,26,22,27,31,25)(19,23,20,29,28,24,30,32)(1,2)(3,11)(4,14)(5,7)(6,9)(8,12)(10,16)(13,15)(17,19,21,20,22,28,31,30)(18,23,26,29,27,24,25,32)(1,3,5,10,6,12,4,13)(2,8,7,15,9,11,14,16)(17,20,21,28,22,30,31,19)(18,24,25,29,27,23,26,32)(3,12)(8,11)(10,13)(15,16) involution — undirectedA Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.